CODE

#include <iostream>

using namespace std;
int l, r;

int main(void) {
  while (scanf("%d %d", &l, &r), l > 0 and r > 0) {
    if (l > r) l ^= r, r ^= l, l ^= r;
    int s = 0;
    for (int i = l; i <= r; ++i) printf("%d ", i), s += i;
    printf("Sum=%d\n", s);
  }
}